—There is still a copy of the book in the library. Wall you go and bottow          ?—No, I’d rather buy         in the bookstore. 

A table made of steel costs more than ____ made of wood.

I would appreciate         if you could look after my pet while I am away.

 -Which of those ties do you like best? -_______ They are all too expensive and don't go well with my new suit.

_______ of my classmates could work out the maths problem because it was too difficult.